Compilare: user.cpp: In function ‘int main()’: user.cpp:46:30: warning: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 3 has type ‘int’ [-Wformat=] fprintf(g,"%lu\n",int(nr/p)); ^ user.cpp:48:30: warning: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 3 has type ‘int’ [-Wformat=] fprintf(g,"%lu\n",int(p/nr)); ^ user.cpp:35:17: warning: ‘x’ may be used uninitialized in this function [-Wmaybe-uninitialized] while(j%x==0&&j!=1) ^ user.cpp:48:26: warning: ‘nr’ may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf(g,"%lu\n",int(p/nr)); ^